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Mrac [35]
2 years ago
15

Help

Mathematics
1 answer:
BigorU [14]2 years ago
4 0

Answer:

69

thats it all of them are 69

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Please name all of the property of multiplication for 4*(-3)*5
PIT_PIT [208]

Answer:

Step-by-step explanation:

You can multiply -3 by 4 and then multiply the result of that by 5, or you could write -3, 4 and 5 in other orders (6 possible orders) and obtain the same result.

I would multiply (-3) by 4, obtaining -12, and then multiply this -12 by 5, obtaining -60.  But I could also multiply 5 by 4, obtaining 20, and then multiply this 20 by -3, obtaining the same -60.

What I have described here are the commutative and associative properties of multiplication.

6 0
3 years ago
A motorboat traveling with a current can go 120 km in 4 hours. Against the current, it takes 6 hours to go the same distance. Fi
Gnesinka [82]

180 is the speed of the motorboat. I don't know the speed of the current.

........................................

120÷4=30

30×6=180

8 0
3 years ago
The vertices of a parallelogram are A(x1,y1), B(x2,y2), C(x3,y3), D(x4,y4)
Tju [1.3M]
<span>For a parallelogram to be proven to be a rectange, the opposide sides must be parallel and the two adjacent sides must be perpendicular. For two parallel sides, the slope of the two sides is equal. Thus, for the parallelogram to be a rectangle, AB is parallel to CD. The slope of AB = (y2 - y1)/(x2 - x1) while the slope of CD = (y4 - y3)/(x4 - x3) Also, BC is perpedicular to CD. For two perpendicular sides, the product of the slopes is -1. The slope of BC is given by (y3 - y2)/(x3 - x2). Therefore, for the parallelogram to be a rectangle. (y2 - y1)/(x2 - x1) = (y4 - y3)/(x4 - x3) and (y4 - y3)/(x4 - x3) x (y3 - y2)/(x3 - x2) = -1. The third option is the correct answer.</span>
3 0
2 years ago
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To solve this question you have to use TAN COS SIN i give brainiest
ElenaW [278]

Answer:

  • 4.3

Step-by-step explanation:

<u>Use cosine:</u>

  • cos = adjacent / hypotenuse
  • cos ∠L = KL/JL
  • cos 21° = 4/x
  • x = 4 / cos 21°
  • x = 4.3 (rounded)
7 0
2 years ago
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The equation that passes through (3,6) and is perpendicular to 3x - 4y = - 2
Ad libitum [116K]

Answer:

A. y=-5/3x+1

Step-by-step explanation:

7 0
3 years ago
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